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(No Model.)

T. GQCANTRELLL oEE EEEDEE.

No. 379,099. Patented Mar. 6, 1888.

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UNITED STATES PATENT Orrrcn.

THOMAS G. CANTRELL, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO LEON C.MARSHUTZ, OF SAME PLACE. 9

ORE-FEEDER.

' SPECIFICATION forming part of Letters Patent No. 379,099, dated March6, 1888.

Application filed August 19, 1887.

To aZZ whom it may concern:

Be it known that I, THOMAS G. OANTRELL, acit-izen of the United States,residing in the clty and county of San Francisco and Stateof'California, have invented certain new and "that was patented on the24th day of August,

The accompanying drawings show in Figure 1 a side elevation of a Kendalloscillating mill and my improved feeder combined with it for operation.Fig. 2 is a front view of the tray and hopper and the upper part of thecrushing-chamber. Fig. 3 is a longitudinal vertical section, on a largerscale,taken through the hopper and tray.

Similar letters vof reference indicate like parts in all the figures ofthe drawings.

A is the feeder-hopper, which is fixed by suitable ears or lugs to theside of the overhead tinibers of the mill-frame, and B is the tray,suspended directly beneath the mouth of the hopper from eyebolts C D byrods and bails E F. The back and sides of the tray in close the lowerend of the hopper, and the edge of the front opening or mouth stands atsuitable height above the tray-bottom.. The supports at the'rear consistof the bail F, passing under the tray and connected by hooks on theupright ends to the eyebolts at the sides of the hopper. The support atthe front is the bail E, passing under the front of the tray andsuspended by the rod from the eyebolt E on the frame.

G is a bumper-rod on the tray, projecting in line with a stop, H, on thetop of the mill. It is made adjustable to meet the stop earlier or laterin the motion of the mill, and the length Serial No. 247,392. (Nomodel.)

of movement produced by the contact of the stop with the projectingbumper can thus be regulated at pleasure. Such variation in the motionof the tray under the hopper produces greater or less discharge of orefrom the end of the tray into the mill, and, as will be readilyunderstood, the same is increased by setting the end of the bumper-rodGr forward to meet the stop. or is reduced by settingit back. For thispurpose the bumper-rod is furnished with a screw-threaded portion, g,working through a threaded nut, I, on the bottom of the tray, and with acrank, G on the rear end for setting it.

The stop H is bolted down to the top of the board or cover of thecrushing-chamber, and as the bumper-rod is adjustable the stop can befixed in place. The feeder is combined in this manner with a mill of theoscillating or rocking kind, and when in operation the feed is regulatedfrom time to time by increasing or reducing the throw of the tray. It ismounted on the frame of the mill in position to bring the discharge endof the tray over the opening in the top of the crushing-chamber, withthe end of the bumper-rod in line to be acted on by the stop on themill.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. A feeder for crushing-mills of the oscillating or rocking kind,consisting of a suitable hopper, the tray suspended beneath its mouth,and the bumper-rod projecting from the front of the tray and adapted tobe struck by a fixed stop on the mill in the oscillations thereof.

2. The combination of the hopper A, swinging tray B, the bumper-rod G,having a crank and projecting in front of the tray, and afixed stop onthe mill.

3. In combination with a crushing-mill of oscillating or rockingkind,the hopper mounted on the mill-frame above the crushingchamber, theswinging tray suspended under the hopper having the extensible bumper-rod G, and a stop, H, on the mill, substantially as described, foroperation as set forth.

4. The combination of a crushing-mill of the oscillating or rocking kindand a feed- In testimony that I claim the foregoing I hopper mounted ona suitable frame, the have hereunto set my hand and seal.

swinging tray suspended between the hopper and the feed-opening of thecrushing-chain THOMAS CANTRELL' 5 her, and provided with a projectingbumper- \Vitnesses: I

rod, G, and a stop, H, on the mill, suhstan- CHAS. E. KELLY, tially asdescribed, for operation as set forth. 0. W. M. SMITH.

It is hereby certi fied that Letters Patent No. 3'1 9,999, granted March6, 1888, upon the application of Thomas G. Cantrell, of SanFrancisoo,'Galifornia, for an improvement in Ore-Feeders, waserroneously issued to Leon 0. Marshutz as assignee of the entireinterest in said invention; that said Letters Patent should have beenissued to Thomas G. Cantrell and Leon 0. Marshatz jointly, said Marshutzbeing assignee of onehalf interest only, as shown by the assignmentsrecorded in this Oflice; and that said I Letters Patent should be readwith this correction therein that the same may conform to the record ofthe case in the Patent Oflioe.

Signed, countersigned and sealed this 1st day of May, A. D. 1888.

D. L. HAWKINS, Assistant Secretary of the Interior.

[SEAL] Gountersigned:

